Citation Format:
LI Qiang, YU Qiuli, LI Haopeng, XU Chunbao, DING Youchun. Design and test of dust-removing sowing monitoring system for rape seeder[J]. Smart Agriculture, 2024, 6(3): 107-117.
DOI:10.12133/j.smartag.SA202401011
Citation:LI Qiang, YU Qiuli, LI Haopeng, XU Chunbao, DING Youchun. Design and Test of Dust Removal Seeding Rate Monitoring System for Rapeseed Seeders[J]. Smart Agriculture, 2024, 6(3): 107-117.
DOI:10.12133/j.smartag.SA202401011
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Design and test of dust-removing seeding monitoring system for rape seeder
LI Qiang1,2, YU Qiuli1,2, LI Haopeng1,2, XU Chunbao1,2, DING Youchun1,2*
(1. College of Engineering, Huazhong Agricultural University, Wuhan 430070, China; 2. Key Laboratory of Agricultural Equipment in the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China)
Summary:
[Objective/Significance]In order to solve the problems of dust affecting the detection performance of seed flow during the operation of air-delivered rapeseed seeding machine and the difficulty of the monitoring system to adapt to the number of rows of sowing rows with different widths, a dust-removing seeding rate monitoring system for rapeseed seeder was designed.
[Method] The monitoring system is composed of a dust-removing rapeseed flow detection device and a sowing rate monitoring terminal, which can be adapted to different width seeders by changing the number of detection devices. According to the structural mechanism of dust affecting seed flow detection, a dust-proof and dust-removing mechanism was designed. The mechanism separates the photoelectric induction device from the seed guide tube through the transparent dust-proof plate, and the dust is only attached to the side of the transparent dust-proof plate close to the seed guide tube, and at the same time, the stepper motor-screw mechanism is used to make the transparent dust-proof plate and the dust removal cloth rub against each other, so as to realize the dust removal of the transparent dust-proof board. Through analysis and testing, key parameters such as the size of the transparent dust plate and the dust removal start threshold are determined.
The comparison bench test of the detection device showed that under the average seeding frequency of 12.4~36.3 Hz and the average dust flow rate of 252~386 mg/s, the detection accuracy of the non-dustproof dust removal detection device was not higher than 80.2% after two dust removal cycles. The average detection accuracy of the dust prevention and dust removal detection device is not less than 93.6% in a single dust removal cycle, and the detection device will not miscount the dust. The results of the seeding monitoring bench test showed that the accuracy of seeding monitoring was not less than 92.2% when the average seeding frequency was not higher than 37.6 Hz. The field sowing test showed that the accuracy of seeding monitoring was not less than 93.1% when the field planting frequency was 14.8~31.1 Hz at the normal operating speed of 2.8~4.6 km/h and the field seeding frequency was 14.8~31.1 Hz.
[Conclusion] The rapeseed sowing rate monitoring system provides effective support for the accurate detection of seed flow under the influence of dust during the operation of air-delivered rapeseed seeding machine, and improves the adaptability to different wide sowing rows.
Key words: rapeseed flow detection; Sow; dust removal; monitoring systems; Accurate counting
Image of the article
Fig.1 Dust sources during seeding monitoring of rapeseed gas feeder collectors
Fig. 1 Dust sources during the monitoring process of pneumatic rapeseed seeder sowing
Fig.2 Schematic diagram of the principle of dust affecting photoelectric sensing devices
Fig. 2 Schematic diagram of the principle of dust affecting photoelectric sensing devices
Fig.3. Schematic diagram of the structure of the dust-removing rapeseed flow detection device
Fig. 3 Structural diagram of dust removal rapeseed flow detection device
Fig.4 Schematic diagram of the working principle of the dust-proof and dust-removing mechanism of the detection device
Fig. 4 Schematic diagram of the working principle of the dust proof and dust removal mechanism of the detection device
Fig.5. The relationship between the length of the transparent dustproof plate and the position of the slider of the dust-removing rapeseed flow detection device
Fig. 5 Relationship between the length of the transparent dust proof plate and the position of the slider in the dust removal rapeseed flow detection device
Fig.6. Bench test site of dust-removing rapeseed flow detection device
Fig. 6 Bench test site of dust removal rapeseed flow detection device
Fig.7. The variation curve of the detection accuracy of the dust-removing rapeseed flow detection device with the ratio of the actual voltage to the initial voltage
Fig. 7 Detection accuracy of the dust-removal rapeseed flow detection device changes with the ratio of actual voltage to
initial voltage
Fig.8 Block diagram of rapeseed seeding monitoring system
Fig. 8 Block diagram of rapeseed seeding rate monitoring system
Fig.9. Flow chart of detection and dust removal procedure of dust-removing rapeseed flow detection device
Fig. 9 Flow chart of detection and dust removal procedures of dust removal rapeseed flow detection device
Fig.10. Seeding monitoring test bench of dust-removing rapeseed seeding monitoring system
Fig. 10 Seeding rate monitoring test bench for dust removal
rapeseed seeding rate monitoring system
Fig.11 Comparative test of the detection accuracy of rapeseed flow detection device with or without dust prevention and dust removal mechanism
Fig. 11 Comparative test on detection accuracy of rapeseed flow detection device with or without dust proof and dust
removal mechanism
Fig.12 Field test of dust-removing rapeseed seeding monitoring system
Fig. 12 Field test of dust removal rapeseed seeding rate monitoring system
About the Author
Prof. Youchun Ding
Ding Youchun, professor and doctoral supervisor of Huazhong Agricultural University, member of the youth editorial board of "Smart Agriculture (Chinese and English)", and member of the Agricultural Mechanization and Electrification Professional Committee of the Chinese Society of Agricultural Engineering. He mainly researches agricultural intelligent technology and equipment, and presides over scientific research projects such as the National Natural Science Foundation of China, the National Key R&D Program, and the Hubei Provincial Key R&D Program. It focuses on the research on key technologies and equipment for intelligent seeding and unmanned operation of agricultural machinery, publishes more than 40 academic papers in authoritative academic journals in the industry, and authorizes more than 20 invention patents.
Source: Smart Agriculture, Issue 3, 2024
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